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Last name Bonfa (邦法 , Bonfa , บนฟ้า) , worldwide, is quite a rare cognomen. The cognomen Bonfa is characteristic of Italy, where it is quite a rare surname, Brazil, where it is a rare surname, and Australia. Not in comparison with a country's population, the name is most common in Brazil, Italy, and China. Much less frequently, Bonfa is the forename as well as the last name.